lkml.org 
[lkml]   [2016]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.4 03/13] kasan: update kasan_global for gcc 7
Date
4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Vyukov <dvyukov@google.com>

commit 045d599a286bc01daa3510d59272440a17b23c2e upstream.

kasan_global struct is part of compiler/runtime ABI. gcc revision
241983 has added a new field to kasan_global struct. Update kernel
definition of kasan_global struct to include the new field.

Without this patch KASAN is broken with gcc 7.

Link: http://lkml.kernel.org/r/1479219743-28682-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
include/linux/compiler-gcc.h | 4 +++-
mm/kasan/kasan.h | 3 +++
2 files changed, 6 insertions(+), 1 deletion(-)

--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -251,7 +251,9 @@
#endif
#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */

-#if GCC_VERSION >= 50000
+#if GCC_VERSION >= 70000
+#define KASAN_ABI_VERSION 5
+#elif GCC_VERSION >= 50000
#define KASAN_ABI_VERSION 4
#elif GCC_VERSION >= 40902
#define KASAN_ABI_VERSION 3
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -52,6 +52,9 @@ struct kasan_global {
#if KASAN_ABI_VERSION >= 4
struct kasan_source_location *location;
#endif
+#if KASAN_ABI_VERSION >= 5
+ char *odr_indicator;
+#endif
};

static inline const void *kasan_shadow_to_mem(const void *shadow_addr)

\
 
 \ /
  Last update: 2016-12-07 08:16    [W:0.102 / U:1.376 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site